This book constitutes the refereed proceedings of the 15th International Conference on Tools and Algorithms for the Construction and Analysis of Systems, TACAS 2009, held in York, UK, in March 2009, as part of ETAPS 2009, the European Joint Conferences on Theory and Practice of Software.

The 27 full papers and 8 tool demonstrations included in the volume were thoroughly reviewed and selected from 131 submissions. The papers are organized in topical sections on Model Checking, Tools, Verification of Concurrent Programs, Parametric Analysis, Program Analysis, and Hybrid Systems.

This book constitutes the refereed proceedings of the 42nd IFIP WG 6.1 International Conference on Formal Techniques for Distributed Objects, Components, and Systems, FORTE 2022, held in Lucca, Italy, in June 2022, as part of the 17th International Federated Conference on Distributed Computing Techniques, DisCoTec 2022.The 12 regular papers presented were carefully reviewed and selected from 28 submissions. They cover topics such as: software quality, reliability, availability, and safety; security, privacy, and trust in distributed and/or communicating systems; service-oriented, ubiquitous, and cloud computing systems; component-and model-based design; object technology, modularity, and software adaptation; self-stabilisation and self-healing/organising; and verification, validation, formal analysis, and testing of the above.

This book constitutes the refereed proceedings of the 21st International Symposium on Formal Methods, FM 2016, held in Limassol, Cyprus, in November 2016. The 38 full papers and 11 short papers presented together with one abstract of an invited talk and one invited presentation were carefully reviewed and selected from 162 submissions. The broad topics of interest for FM include: interdisciplinary formal methods; formal methods in practice; tools for formal methods; role of formal methods in software and systems engineering; theoretical foundations.